Skip to main content
Log in
Microchip Technology 24AA02T-I/SN — Memory (DRAM / SRAM / Flash / EEPROM)

Microchip 24AA02T-I/SN 2Kbit I2C EEPROM, 400 kHz, 8-SOIC

MPN24AA02T-I/SN
End of Life

Microchip 24AA02T-I/SN, 2Kbit I2C Serial EEPROM, 400 kHz clock, 900 ns access, 1.7V-5.5V supply, 256 x 8 organization, 8-SOIC package, -40°C to 85°C.

$0.3Ref. price · indicative, final on quote
Microchip Technology 24AA02T-I/SN datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

24AA02T-I/SN specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage1.7V ~ 5.5V
Clock frequency400 kHz
Memory interfaceI²C
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyEEPROM
Access time900 ns
Memory size2Kbit
Memory formatEEPROM
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization256 x 8
Write cycle time - word, page5ms

Product details

2 Kbit I2C EEPROM for parameter storage

The Microchip 24AA02T-I/SN is a 2Kbit serial EEPROM with an I2C interface running at 400 kHz. It stores 256 x 8 bits of non-volatile data, organized for byte-level reads and writes. The 900 ns access time is fast enough for most microcontroller parameter-retrieval loops, and the 5 ms write cycle per word or page sets the timing budget for firmware update routines. The supply range spans 1.7V to 5.5V, which lets this part drop into both 1.8V and 3.3V logic domains without a level translator.

Wide supply — the deciding spec

The 1.7V minimum supply is the main reason to pick the 24AA02T-I/SN over the 24LC025T-I/ST, which requires 2.5V minimum. In a 1.8V-only system — battery-powered IoT nodes, single-cell Li-ion designs — the 24AA02T-I/SN runs directly off the rail. The 24LC025T-I/ST needs a boost converter or a second regulator, adding cost and board area.

Surface-mount footprint and tape options

Frequently asked questions

Is 24AA02T-I/SN equivalent to 24LC02T?

The 24AA02T-I/SN and 24LC02T are functionally equivalent in memory size (2Kbit), interface (I2C at 400 kHz), package (8-SOIC), and timing (900 ns access, 5 ms write). The key difference is the supply voltage: the 24AA series operates down to 1.7V, while the 24LC series requires 2.5V minimum. For 1.8V systems, the 24AA02T-I/SN is the correct choice.

What is the write cycle time of 24AA02T-I/SN?

The write cycle time for a word or page is 5 ms. Firmware routines should allow this window after each write before polling the acknowledge or proceeding to the next operation.

Can I buy 24AA02T-I/SN in cut tape quantities?

Yes, the listing includes Cut Tape (CT) as an option alongside Tape & Reel (TR). Cut tape is suited for prototype builds and low-volume production where a full reel is not needed.